Since the term “BIM” first started appearing in the 1990s, new tools and technologies have brought Building Information Modeling to many disciplines of building work, including design, construction, utilities, transportation engineering, asset management, and civil and structural engineering––just to name a few.
And while you’ll likely get wildly different definitions of what BIM is depending on who you ask, no one disputes the importance of rich information in developing these advanced models.
BIM isn’t just for architects and it isn’t just a design tool. It’s a way to enhance collaboration among data-gathers, designers and builders––streamlining workflows, reducing rework and simplifying operations across projects.
As data-gatherers, surveyors have become valuable resources in BIM projects, offering the geospatial data points that are among the first and most important layers in a building project model as well as the subsequent phases such as construction, inspection, financial control, and more.
In particular, surveyors are becoming integral for BIM projects in a few key ways, such as:
While surveying skills are extremely valuable for creating BIM models, they may not be used in the way an experienced surveyor is used to. Since the goal of BIM is creating data useful throughout the whole life of a structure or asset, surveyors should ask themselves how they can apply their expertise over the long-term, rather than just the design and construction phases.
With this in mind, we’ve highlighted a few important tools that can help surveyors gather the precise, reliable data points needed for BIM projects.
To new surveyors, BIM might look daunting. However, most of the geospatial data BIM models rely on is collected using the tools and technology surveyors are already familiar with. Traditional ground surveys, for example, are essential. Data gathered from GNSS and total stations is integrated with LIDAR and photos to generate geo-references, improving model precision and accuracy in fine detail.
Here are a few surveying tools well-suited for BIM projects:
These innovative mini prisms offer precise alignment from almost any position and can be installed on surfaces other prisms simply can’t go. These qualities make them perfect for BIM applications where data is needed for surveying, construction layout and ongoing monitoring throughout the structure’s lifecycle.
Rothbucher’s mini prisms are available in several sizes and both 180º or full 360º rotation ranges. Surveyors also have the option of using target reflectors. The versatility of these mini prisms enable surveyors to find multiple ways to reach the best solution for their project.
Other BIM-friendly advantages include:
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RS30 and RS40 Smart Survey Targets
These are Rothbucher’s most versatile markers––essential for advanced construction layouts common among BIM projects. They easily attach to a variety of surfaces with epoxy, screws, or bolts––a ‘go to’ survey control monument for construction.
RS50, RS60 and RS70 Smart Survey Targets
RS50, RS60 and RS70 Smart Survey Targets are flexible, permanent, precise and easy to attach.
For accurate control and precise 3D monitoring, the RS60, with reflective tape, is the best choice for use with modern total stations. The RS70, with simple, high-contrast cross hairs, is best for ultra-quick, super-precise elevation checks.
Reflective Survey Targets RS50 & RS60:
Construction Targets RS70:
• RS50/RS60/RS70 Smart Targets & Accessories ⟶
Monitoring accurate finished floor levels (FFL) are essential to maintaining accurate BIM data during and after construction. When markings disappear, surveyors are forced to do costly rework before serious problems arise.
Rothbucher RS11 Finished Floor Markers are the best way to maintain precision throughout any project’s entire lifecycle. Millions of these markers are already in use around the world and have brought a new standard to construction sites.
For an accurate FFL overview, fix a network of reference points on staircases, elevator shafts and several on each floor. From these permanent reference points the FFL can be transferred to any point it’s needed.
Documentation, verification, and permanent proof for:
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Rothbucher’s RS21 Datum Markers are the smart, high-precision way to keep control monuments in place before and after surface treatments. These are low profile, self-adhesive markers that attach easily to the points you want to monitor, and flexible stubs on the sturdy, UV resistant marker body are easy to find after plastering.
These wall targets are great for backsights, check shots, elevation references and monitoring situations––the best way to take advantage of your investment in high tech survey equipment. Save crew time, keep employees out of danger, get better BIM data.
Have questions or want to learn more about Berntsen’s products? Contact us today or request a catalog.
Berntsen International, Inc. has been "Marking the Infrastructure of the World" since its founding as Berntsen Cast Products in 1972 by Phillip Peterson and Peter Berntsen. The company garnered early success by manufacturing and selling top quality monuments to mark the nation’s boundaries. Investments in product and process innovation drive company growth and are a core reason why Berntsen is recognized as a premier provider of the best markers in the world. Today Berntsen has a product line of more than 1,000 markers and those products mark infrastructure and boundaries in over 100 countries. Read More...
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